TURBOs!?

[Sanosuke]

Ok, well, I am brand new to serious tuning and new to tuning the complicated platform of the SVX. My questions are much more than about turbos but why not start there?

Who has a turbo-ed SVX? What is your set up with it (twin, big, small, scroll, intercooled...)? What are the side affect modifications (injectors, rings, pistons, rods, crank, cams, valves/ seats, etc...)? What tranny is good (I hope to slap in an STi 6speed)? Any space issues? Mount issues? Issues in general? What is the highest boost anyone has run with an SVX? Do you know any sites I can read about race set ups on performance engines?

[longassname]

There is one low boost turbo system on the network that works pretty well. phastsvx has it. There are a couple others that haven't quite suceeded yet.

They have all been single turbo systems with the turbo put in place of where the oe air hose is. It's tough to fit a high flowing hybrid there; you wouldn't be able to fit anything really big. A gt3076r would be sweet choice for that location.

A pair of smaller turbos could probably be fit more easily underneath the engine in the front corners. The smaller the easier the installation. You might manage to squeeze a pair of gt2871r turbos down there which would be good for huge power. More likely you could squeeze a pair of gt2860rs or any of the skyline turbos which are 25 series. Even easier than that would be a pair of small frame turbos. A pair of gt2259 turbos would do fine. If anyone would ever set their sites lower than a 1000hp dyno queen it could be done easily enough. ECUtune stage 2 engine management, a set of exhaust cams, and a pair of gt2259 turbos would probably give you a 500hp svx with little hassle though you might/probably would find you need lower compression pistons to boot.

[Johnybeas]

Lan if I run a hydra with a 35r and fmic and lcr pistons n new cams n such with a bit of porting what do you think I'd be seeing number wise?? Aren't the 35r's cheaper than a 40 series?? I also might have easy access to one for a good price.

[longassname]

would be a great turbo if you can fit it...i have my doubts though

Originally Posted by Johnybeas

Lan if I run a hydra with a 35r and fmic and lcr pistons n new cams n such with a bit of porting what do you think I'd be seeing number wise?? Aren't the 35r's cheaper than a 40 series?? I also might have easy access to one for a good price.

[odepaj]

Originally Posted by Johnybeas

Lan if I run a hydra with a 35r and fmic and lcr pistons n new cams n such with a bit of porting what do you think I'd be seeing number wise?? Aren't the 35r's cheaper than a 40 series?? I also might have easy access to one for a good price.

The cams are the big determining factor there.

The 35R will be very efficient on our motor and 300-350hp should be easily attainable.

The EG33 should produce about 450-500hp at 18psi. These were with rough numbers so of course, it's a +/- situation.

A 35R should fit in the usual space, a 40R is gonna be a tight squeeze if its possible....

Ninja edit: Looking through things alittle more, the 4088R is gonna be lag-city! The .85 (maybe the .95) hot side will probably be the only exception...

I think the 22 series is alittle small for twins. The 25 or 28 looks alot better.



Also, as with any mods of this sort, a goal HP# is your first step! It makes designing the system alot easier (and it will be alot more efficient).


Dustin

[Johnybeas]

I was planning on going along the same lines of what tom was planning to produce to sell, but having Big Valley Performance out of Orlando do the piping and such for me and do the tuning.

I was planning on building the motor and running lcr pistons around about 8.45 to 1 ratio but it's all a matter of cost.

I don't know what I want to do because it is so expensive so I'm trying to research options before making the jump and dropping cash.

[Sanosuke]

I understand that certain things have never been done to an SVX before. What is the most insane SVX out there? I want to set my goal hp/ torque around 600. There are serious limitation, I know, but I would just like to know what kind of things people are running right now and what has been done before. Mainly so I can crush their numbers and expectations.

How many forced induction SVX are on the road? How many 6speeds?

[longassname]

The biggest engineering constraint is physically fitting the turbo or turbos. I think you'll be more successful if you pay more attention to that in the begining.

Beyond that you need to be realistic about building an engine. If you want to get big power you have to build an engine. Propperly building an EG33 is a long, expensive project. Say you want to turbo a car next year..you'd need to start building your engine now. Once you have your engine you can put your engine management on. Once you have engine management working you can put on a turbo or turbos. It's a lot of time and money.

Anybody not looking to spend 15 or 20 grand on it needs to take a step back for a reality check and go back to fitting small inexpensive turbos on a stock engine with ECUtune stage 2 engine management. If you are realistic about it you can make a fast car for a few grand.

Originally Posted by Johnybeas

I was planning on going along the same lines of what tom was planning to produce to sell, but having Big Valley Performance out of Orlando do the piping and such for me and do the tuning.

I was planning on building the motor and running lcr pistons around about 8.45 to 1 ratio but it's all a matter of cost.

I don't know what I want to do because it is so expensive so I'm trying to research options before making the jump and dropping cash.

[BackWoodsBob]

Originally Posted by odepaj

Also, as with any mods of this sort, a goal HP# is your first step! It makes designing the system alot easier (and it will be alot more efficient).
Dustin

Given that I have a goal hp in mind, I'd like some reassurance that my path is efficient and lets me reach my goal.

Goal HP: 3-375hp stock compression, for now
Lan stage 2
suggested MAF and injectors.
Detchwerks 225pump
GT30r remote mount.

My target spool RPM range is around 3,000rpm. Full spool no later than 4k with a redline raised to 7500. Major exhaust porting as well, UEL headers. OEM primaries mated to 2.25" secondaries to 3" catback.

Currently the engine has been ripped apart down to the halves and re-sealed, new gaskets including HG's. No leaks, no burnt oil, no weird noises. I should do a compression test, haven't got a tester at the moment however.

[SVXRide]

Originally Posted by BackWoodsBob

Given that I have a goal hp in mind, I'd like some reassurance that my path is efficient and lets me reach my goal.

Goal HP: 3-375hp stock compression, for now
Lan stage 2
suggested MAF and injectors.
Detchwerks 225pump
GT30r remote mount.

My target spool RPM range is around 3,000rpm. Full spool no later than 4k with a redline raised to 7500. Major exhaust porting as well, UEL headers. OEM primaries mated to 2.25" secondaries to 3" catback.

Currently the engine has been ripped apart down to the halves and re-sealed, new gaskets including HG's. No leaks, no burnt oil, no weird noises. I should do a compression test, haven't got a tester at the moment however.

Hi Bob,

Since you're starting up your own effort, you might want to start a dedicated thread instead of posting into threads that are several years old. It does look like you're going to have some fun!

Bill

[bazza]

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